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Related Best Practices
How to implement snapshots
(RPOs) by supporting more frequent recovery points. When properly implemented, snapshot data can be used to restore lost files or recover from more substantial data loss. Features like data deduplication are also appearing in snapshots to reduce disk storage requirements, allowing for many more snapshots and longer retention periods. Below are a series...
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How to implement disk-to-disk backups
as backup targets. Storage space is finite, which can limit the allowable retention period for data. Data reduction technologies like data deduplication and delta differencing can dramatically extend the effective storage capacity. Also, indexing and search are can be valuable when rapid file organization and location are needed. Below are a series of best...
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How to improve tape backup performance and reliability
The role of tape is clearly changing, shifting away from everyday data backup and moving toward deep archiving or offsite storage, but tape is still an important element of many data centers. Storage professionals must contend with concerns about tape performance and reliability that have remained almost unchanged for decades. In...
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FAQ's
Are there any instances where data deduplication will not provide any benefits? Superior benefits?
a lot of new images being created, then you'll see very little benefit from data deduplication. In that case, you're better off just running differential or incremental backups.
As far as areas in which data deduplication can provide superior benefits, databases have a lot of redundant data and... More...
What is server-free backup, and how does it work?
this is accomplished, and they generally have an alternate copy of the data, such as a business continuous volume (BCV) or a split-mirror, or perhaps a snapshot, and then present that data to some other system or device that can copy the data to tape. The typical way that this is done is via a dedicated backup...
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Is there a similar performance impact, or any impact at all, when restoring deduplicated data?
It really depends on how the index is constructed and how the data is laid out on the back-end disk. As long as the index can remain in memory, it can continue to process and find data as it's reconstructed.
The problem that begins to emerge is two-fold. First off, if you have backups going on at the same... More... |